Race · Round 6 of 16 · 23 June 1985

1985 Detroit Grand Prix

Keke Rosberg won for Williams from 5th on the grid at Detroit Street Circuit. 12 of the starters were not classified.

Circuit: Detroit Street CircuitDetroit, Michigan, United States of America
Winner: Keke RosbergWilliams
Pole: Ayrton Senna
Fastest lap: Ayrton Senna
Entries: 2512 classified

Classification

Classification
Pos	Driver	Constructor	Chassis	Grid	Laps	Out	Points	FL
1	Keke Rosberg	Williams	—	5	63	Finished	9
2	Stefan Johansson	Ferrari	156/85	9	63	Finished	6
3	Michele Alboreto	Ferrari	156/85	3	63	Finished	4
4	Stefan Bellof	Tyrrell	10	19	63	Finished	3
5	Elio de Angelis	Team Lotus	97T	8	63	Finished	2
6	Nelson Piquet	Brabham	BT54	10	62	Finished	1
7	Thierry Boutsen	Arrows	A8	21	62	Finished	0
8	Marc Surer	Brabham	BT54	11	62	Finished	0
9	Eddie Cheever	Alfa Romeo	—	7	61	Finished	0
10	Andrea de Cesaris	Ligier	JS25	17	61	Finished	0
11	Gerhard Berger	Arrows	A8	24	60	Finished	0
12	Jacques Laffite	Ligier	JS25	16	58	Finished	0
DNF	Ayrton Senna	Team Lotus	97T	1	51	Accident	0	fastest lap
DNF	Martin Brundle	Tyrrell	10	18	30	Collision	0
DNF	Philippe Alliot	RAM	3	23	27	Collision	0
DNF	Nigel Mansell	Williams	—	2	26	Accident	0
DNF	Alain Prost	McLaren	MP4/2B	4	19	Accident	0
DNF	Riccardo Patrese	Alfa Romeo	—	14	19	Electrical	0
DNF	Derek Warwick	Renault	—	6	18	Transmission	0
DNF	Patrick Tambay	Renault	—	15	15	Accident	0
DNF	Pierluigi Martini	Minardi	M185	25	11	Engine	0
DNF	Niki Lauda	McLaren	MP4/2B	12	10	Brakes	0
DNF	Teo Fabi	Toleman	TG185	13	4	Clutch	0
DNF	Manfred Winkelhock	RAM	3	20	3	Turbo	0
DNS	Piercarlo Ghinzani	Osella	—	22	—	Accident	0

A blank chassis is a season the team ran more than one design and no source says which car raced here.

F1DB layout detroit-2 · 4.023 km · 22 turns, F1DB’s figures
F1DB, CC BY 4.0 · drawn by Jules Roy
The outline is F1DB’s, for every layout; the trace is OpenStreetMap’s, where it exists.

Grid to flag

Lines run from grid slot to result, ending at the last lap completed. A dashed line ending in a cross is a driver not classified. Nothing between is recorded, so a crossing is not an overtake at that lap.

Grid to flag
Driver	Grid	Result	Laps
Keke Rosberg	5	1	63
Stefan Johansson	9	2	63
Michele Alboreto	3	3	63
Stefan Bellof	19	4	63
Elio de Angelis	8	5	63
Nelson Piquet	10	6	62
Thierry Boutsen	21	7	62
Marc Surer	11	8	62
Eddie Cheever	7	9	61
Andrea de Cesaris	17	10	61
Gerhard Berger	24	11	60
Jacques Laffite	16	12	58
Ayrton Senna	1	DNF	51
Martin Brundle	18	DNF	30
Philippe Alliot	23	DNF	27
Nigel Mansell	2	DNF	26
Alain Prost	4	DNF	19
Riccardo Patrese	14	DNF	19
Derek Warwick	6	DNF	18
Patrick Tambay	15	DNF	15
Pierluigi Martini	25	DNF	11
Niki Lauda	12	DNF	10
Teo Fabi	13	DNF	4
Manfred Winkelhock	20	DNF	3

Qualifying

Qualifying
Pos	Driver	Constructor	No.	Time	Gap	Interval
1	Ayrton Senna	Team Lotus	12	1:42.051	—	—
2	Nigel Mansell	Williams	5	1:43.249	+1.198	+1.198
3	Michele Alboreto	Ferrari	27	1:43.748	+1.697	+0.499
4	Alain Prost	McLaren	2	1:44.088	+2.037	+0.340
5	Keke Rosberg	Williams	6	1:44.156	+2.105	+0.068
6	Derek Warwick	Renault	16	1:44.163	+2.112	+0.007
7	Eddie Cheever	Alfa Romeo	23	1:44.231	+2.180	+0.068
8	Elio de Angelis	Team Lotus	11	1:44.769	+2.718	+0.538
9	Stefan Johansson	Ferrari	28	1:44.921	+2.870	+0.152
10	Nelson Piquet	Brabham	7	1:45.194	+3.143	+0.273
11	Marc Surer	Brabham	8	1:45.979	+3.928	+0.785
12	Niki Lauda	McLaren	1	1:46.266	+4.215	+0.287
13	Teo Fabi	Toleman	19	1:46.546	+4.495	+0.280
14	Riccardo Patrese	Alfa Romeo	22	1:46.592	+4.541	+0.046
15	Patrick Tambay	Renault	15	1:47.028	+4.977	+0.436
16	Jacques Laffite	Ligier	26	1:47.267	+5.216	+0.239
17	Andrea de Cesaris	Ligier	25	1:47.393	+5.342	+0.126
18	Martin Brundle	Tyrrell	3	1:47.563	+5.512	+0.170
19	Stefan Bellof	Tyrrell	4	1:47.911	+5.860	+0.348
20	Manfred Winkelhock	RAM	9	1:47.926	+5.875	+0.015
21	Thierry Boutsen	Arrows	18	1:48.023	+5.972	+0.097
22	Piercarlo Ghinzani	Osella	24	1:48.546	+6.495	+0.523
23	Philippe Alliot	RAM	10	1:50.455	+8.404	+1.909
24	Gerhard Berger	Arrows	17	2:05.307	+23.256	+14.852
25	Pierluigi Martini	Minardi	29	3:04.446	+1:22.395	+59.139

Before knock-out qualifying arrived in 2006 there is one time per driver; from 2006, the best lap of each of the three sessions.

Pit stops

Pit stops are recorded from 1994. F1DB, the source of every stop here, holds none before then, so this race has no stints to draw.

Practice sessions Warm-up

Warm-up

Warm-up
Pos	Driver	Constructor	No.	Best lap	Gap	Interval	Laps
1	Ayrton Senna	Team Lotus	12	1:44.877	—	—	—
2	Nigel Mansell	Williams	5	1:45.213	+0.336	+0.336	—
3	Elio de Angelis	Team Lotus	11	1:46.009	+1.132	+0.796	—
4	Alain Prost	McLaren	2	1:46.148	+1.271	+0.139	—
5	Derek Warwick	Renault	16	1:46.411	+1.534	+0.263	—
6	Stefan Johansson	Ferrari	28	1:46.453	+1.576	+0.042	—
7	Michele Alboreto	Ferrari	27	1:47.178	+2.301	+0.725	—
8	Marc Surer	Brabham	8	1:47.230	+2.353	+0.052	—
9	Eddie Cheever	Alfa Romeo	23	1:47.521	+2.644	+0.291	—
10	Thierry Boutsen	Arrows	18	1:47.589	+2.712	+0.068	—
11	Jacques Laffite	Ligier	26	1:47.675	+2.798	+0.086	—
12	Martin Brundle	Tyrrell	3	1:47.894	+3.017	+0.219	—
13	Keke Rosberg	Williams	6	1:48.030	+3.153	+0.136	—
14	Riccardo Patrese	Alfa Romeo	22	1:48.076	+3.199	+0.046	—
15	Stefan Bellof	Tyrrell	4	1:48.177	+3.300	+0.101	—
16	Patrick Tambay	Renault	15	1:48.493	+3.616	+0.316	—
17	Niki Lauda	McLaren	1	1:48.702	+3.825	+0.209	—
18	Andrea de Cesaris	Ligier	25	1:48.908	+4.031	+0.206	—
19	Nelson Piquet	Brabham	7	1:49.790	+4.913	+0.882	—
20	Gerhard Berger	Arrows	17	1:49.803	+4.926	+0.013	—
21	Teo Fabi	Toleman	19	1:50.870	+5.993	+1.067	—
22	Piercarlo Ghinzani	Osella	24	1:52.944	+8.067	+2.074	—
23	Pierluigi Martini	Minardi	29	1:58.202	+13.325	+5.258	—
24	Manfred Winkelhock	RAM	9	2:02.948	+18.071	+4.746	—
25	Philippe Alliot	RAM	10	2:07.016	+22.139	+4.068	—

Each driver’s best lap of the session and the laps they ran: a classification, not lap timing.

The cars in this race

The photograph each car's Wikipedia article leads with, from Wikimedia Commons: taken wherever and whenever that was, not necessarily at this race.

Lotus 97T
Lotus97T · https://www.flickr.com/jonbradbury · CC BY-SA 4.0

A photograph marked unchecked has a file name that does not name the car it is shown for. Most are still the right car, filed under the driver rather than the machine — but nobody has confirmed these one by one.

3 more photographs

Where this comes from

Round: 6 of 1985
Grand Prix: Detroit Grand Prix
Dates: 23 Jun 1985
Layout raced: —
Format: Standard weekend
Constructor: Williams
Entrant: Williams-Honda
Confidence: reference

No layout is recorded for this round: this register has no layout timeline for the circuit, and a blank here is better than a guess.